12 Days of Christmas
19th
99 Bottles of Beer
32nd
Abundant Numbers
5th
Arithmetic Numbers
9th
ASCII Table
10th
Card Number Validation
7th
Christmas Trees
16th
Collatz
117th
552nd61st15th
Cubes
8th
Diamonds
15th
Divisors
39th
Evil Numbers
33rd
Factorial Factorisation
8th
Farey Sequence
12th
Fibonacci
993rd
58th
Fizz Buzz
44th
51st
Foo Fizz Buzz Bar
712th44th9th
Fractions
12th
Gray Code Decoder
10th
7th
Gray Code Encoder
13th
Happy Numbers
31st
Intersection
15th
Inventory Sequence
8th
ISBN
10th
Kaprekar Numbers
6th
Kolakoski Sequence
253rd23rd9th
Leap Years
31st
Leyland Numbers
288th
Look and Say
7th
Lucky Numbers
9th
Niven Numbers
40th
Odious Numbers
36th
Ordinal Numbers
17th
PalindromemordnilaP
8th
Pangram Grep
21st
Pascal’s Triangle
15th
Pernicious Numbers
39th
Prime Numbers
8th
Recamán
218th
8th
Seven Segment
9th
Sierpiński Triangle
14th
Smith Numbers
9th
Transpose Sentence
7th
Trinomial Triangle
3rd
Ulam Sequence
2nd
United States
16th
Van Eck Sequence
8th